1. The right upper pulmonary vein collects blood from the upper and middle lobe branches of the vein, so care should be taken not to ligate the middle lobe veins together when performing right upper lung lobectomy. Only the upper lobe branches of the right upper pulmonary vein can be treated. 2.In addition to the right upper pulmonary vein distributed in the upper lobe of the same name, there is still a deep vein that collects blood from the lower part of the anterior segment, which is located in the horizontal fissure between the upper and middle lobes, in front of the posterior branch and often overlaps with the posterior branch. 3.The distance between the upper and lower four pulmonary veins of the left and right lungs usually does not exceed 1cm outside the pericardium, the shortest of which is the right lower pulmonary vein which is only 0.4cm outside the pericardium, so the safe way to deal with it after lobectomy is to free its branches and then deal with it properly. 4, four pulmonary veins in the pericardium have a little trip into the left atrium again, so when there is an accidental bleeding of pulmonary veins, it is difficult to deal with it, so local compression can be done first, then the pericardium can be cut open and the pulmonary veins can be dealt with in the pericardium to control bleeding. 5, pulmonary artery and vein vessels with body circulation vessels than the usual thin wall, thick caliber, variation, surgery should use “five ligature method” to deal with properly. Once the risk of hemorrhage occurs during surgery, gauze should be used calmly and quickly to fill the bleeding and aspirate the blood, identify the bleeding site, accurately clamp to stop bleeding or repair the bleeding point, do not panic clamp, otherwise it will cause greater vascular tearing, resulting in uncontrollable hemorrhage, due to the low pressure of the pulmonary circulation, the rupture of small injuries within 0.2 cm, gauze compression can be used for 5-10 minutes “Cold treatment”, often can achieve satisfactory results. 6, when clearing lymph nodes must pay attention to the protection of adjacent structures, such as esophageal tracheal superior vena cava odd vein and aorta, stripping to be patient action should be gentle. When clearing the subbronchial lymph nodes of the trachea, care should be taken to protect the bronchial artery. To prevent ventricular fibrillation and cardiac arrest caused by vagal reflexes from stimulating the rongeurs, attention should be paid to protecting the left laryngeal recurrent nerve in the subaortic arch lymph nodes, and electrocautery should not be used to stop bleeding as much as possible. For lymph nodes with difficult dissection to avoid vascular injury, metal clips can be used to mark the lymph nodes for postoperative localization of radiotherapy. 7.When lung resection is performed for benign diseases, the pulmonary artery should be treated first and then the pulmonary vein; however, when resecting malignant lung tumors, the pulmonary vein should be ligated first and then the pulmonary artery. In order to prevent the tumor cells from being dislodged by intraoperative squeezing and entering into the vein, causing cancer thrombosis and metastasis. Sometimes the upper stem of right pulmonary artery is issued too early, before the right pulmonary artery enters the pulmonary hilum, that is, when it is located behind the superior vena cava, the upper stem is issued. In the process of freeing the artery, some branches of the upper pulmonary vein happen to cover the artery to be treated, so the vein can be treated first and then the related vessels. 9, the right lung middle lobe bronchial start, there are three groups of lymph nodes around, plus the middle lobe bronchial thin and long, once the inflammation, tuberculosis, tumor and other reasons caused by lymph node enlargement, can cause thin and long middle lobe bronchial narrowing or obstruction caused by middle lobe atelectasis. 10, pulmonary cleft often due to inflammation and congenital dysplasia and the formation of pulmonary cleft insufficiency, often bring difficulties to lobectomy surgery, available blunt separation scissors cut and clamp cut off and other methods to deal with, but in the lung door to carefully dissect to avoid damage to the pulmonary arteries and veins.